<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin:0;
            padding:0;
        }
        ul{
            /* width: 200px;; */
            /* height: 200px; */
            display:flex;
            justify-content:space-around;
            list-style: none;
            border: 5px solid red;
            /* flex-di  rection: column; */
            /* 表示换行的意思 wrap就是换行 */
            flex-wrap:nowrap
        }
        ul li{
            /* width: 50px; */
            background-color: aqua;
        }
    </style>
</head>
<body>
    <div>
        <ul>
            <li>aa</li>
            <li>bb</li>
            <li>cc</li>
        </ul>
    </div>
</body>
</html>